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    Solderless circularly polarized microwave antenna element
    1.
    发明授权
    Solderless circularly polarized microwave antenna element 有权
    无焊圆偏振微波天线元件

    公开(公告)号：US08912974B2

    公开(公告)日：2014-12-16

    申请号：US13222575

    申请日：2011-08-31

    Applicant: David Green ,  Cornelis Frederik Du Toit

    Inventor： David Green ,  Cornelis Frederik Du Toit

    IPC: H01Q1/50 ,  H01Q9/04 ,  H01Q23/00 ,  H01Q21/30

    CPC classification number: H01Q23/00 ,  H01Q9/0478 ,  H01Q21/30

    Abstract: Disclosed herein is an antenna feed design for transmitting or receiving a circularly polarized microwave signal, and a communication device using that antenna feed design. Resonating disks are bowl-shaped to balance E-plane and H-plane magnetic field patterns, decreasing cross-polarization, and providing mechanical rigidity. A non-planar circuit replaces planar microstrip transmission lines for transmitting the signal, with 90° phase shifts, from an input point to excitation points. This non-planar circuit overcomes some of the layout problems encountered in planar circuits. It maintains impedance matching from the input point to the excitation points by progressively tapering down the characteristic transmission line impedance of each successive section. The non-planar circuit has sufficient mechanical strength and rigidity to allow it to be supported at only two anchor points. Similarly, the non-planar disks are also of sufficient strength to require only a single anchor point each. Thus, the antenna parts do not require any additional dielectric substrate support, and all parts are DC grounded. The use of fingers surrounding the ground plane and extending towards the resonating disks results in improved off-boresight polarization. All components of the antenna feed are built and combined without the use of solder or dielectric substrate support, creating a stable, corrosion-resistant, low-cross polarization antenna.

    Abstract translation: 本文公开了一种用于发送或接收圆偏振微波信号的天线馈送设计，以及使用该天线馈送设计的通信设备。 谐振盘是碗状的，以平衡E平面和H平面磁场图案，减少交叉极化，并提供机械刚度。 非平面电路代替用于从输入点到激励点传输具有90°相移的信号的平面微带传输线。 该非平面电路克服了平面电路中遇到的一些布局问题。 它通过逐渐减小每个连续部分的特性传输线阻抗来保持从输入点到激励点的阻抗匹配。 非平面电路具有足够的机械强度和刚度，以允许其仅在两个锚定点处被支撑。 类似地，非平面盘也具有足够的强度，每个仅需要一个锚定点。 因此，天线部件不需要任何额外的电介质基板支撑，并且所有部件都是直流接地的。 使用围绕接地平面并且朝着谐振盘延伸的指状物导致改进的远视偏振。 天线馈电的所有组件都被构建和组合，而不使用焊料或电介质基板支撑，产生稳定的，耐腐蚀的低交叉极化天线。

    TUNABLE MICROWAVE DEVICES WITH AUTO-ADJUSTING MATCHING CIRCUIT
    2.
    发明申请
    TUNABLE MICROWAVE DEVICES WITH AUTO-ADJUSTING MATCHING CIRCUIT 有权
    具有自动调整匹配电路的微型微波器件

    公开(公告)号：US20110063042A1

    公开(公告)日：2011-03-17

    申请号：US12952395

    申请日：2010-11-23

    Applicant: Greg Mendolia ,  James Andrew Martin, III ,  Izz Khayo ,  Cornelis Frederik Du Toit ,  Heinz Bachmann ,  William McKinzie

    Inventor： Greg Mendolia ,  James Andrew Martin, III ,  Izz Khayo ,  Cornelis Frederik Du Toit ,  Heinz Bachmann ,  William McKinzie

    IPC: H03H7/38

    CPC classification number: H03H7/40 ,  H01P5/04 ,  H01Q1/242 ,  H01Q1/50 ,  H03F1/56 ,  H03F3/60 ,  H03H7/38 ,  H04B1/0458

    Abstract: An embodiment of the present invention provides an apparatus, comprising an input port and a dynamic impedance matching network capable of determining a mismatch at the input port and dynamically changing the RF match by using at least one matching element that includes at least one voltage tunable dielectric capacitor. The matching network may be a “Pi”, a “T”, or “ladder” type network and the apparatus may further comprise at least one directional coupler capable of signal collection by sampling a portion of an incident signal, a reflected signal or both. In an embodiment of the present invention, the apparatus may also include a control and power control & logic unit (PC LU) to convert input analog signals into digital signals and sensing VSWR phase and magnitude and processing the digital signals using an algorithm to give it a voltage value and wherein the voltage values may be compared to values coming from the coupler and once compared and matched, the values may be passed to a Hi Voltage Application Specific Integrated Circuit (HV ASIC) to transfer and distribute compensatory voltages to the matching network elements. Additional embodiments are disclosed.

    Abstract translation: 本发明的实施例提供了一种装置，其包括输入端口和动态阻抗匹配网络，其能够通过使用至少一个匹配元件来确定输入端口处的失配并动态地改变RF匹配，该匹配元件包括至少一个电压可调电介质 电容器。 匹配网络可以是“Pi”，“T”或“梯形”型网络，并且该装置还可以包括至少一个定向耦合器，其能够通过对入射信号的一部分，反射信号或两者进行采样来进行信号采集 。 在本发明的一个实施例中，该装置还可以包括控制和功率控制与逻辑单元（PC LU），用于将输入的模拟信号转换成数字信号，并且使用算法给VSWR相位和幅度并处理数字信号 电压值，并且其中电压值可以与来自耦合器的值进行比较，并且一旦比较和匹配，则该值可以被传递到高电压专用集成电路（HV ASIC），以将补偿电压传输和分配给匹配网络 元素。 公开了另外的实施例。

    Stacked patch antenna and method of operation therefore
    4.
    发明授权
    Stacked patch antenna and method of operation therefore 有权
    堆叠贴片天线和操作方法

    公开(公告)号：US07106255B2

    公开(公告)日：2006-09-12

    申请号：US10914580

    申请日：2004-08-09

    Applicant: Cornelis Frederik du Toit

    Inventor： Cornelis Frederik du Toit

    IPC: H01Q1/24

    CPC classification number: H01Q9/0414 ,  H01Q19/005

    Abstract: A stacked antenna comprising a first patch including at least one slot-like part thereon, a second patch including at least one strip-like part thereon; and wherein the at least one slot-like part of the first patch at least partially crosses over or partially crosses under the at least one strip-like part of the second patch thereby forming a coupling region. The at least one slot-like part may be formed by at least one notch in the first patch and the at least one strip-like part may be formed by at least one hole in the second patch.

    Abstract translation: 一种堆叠天线，包括：第一贴片，其上包括至少一个狭缝状部分，第二贴片，其上包括至少一个条形部件; 并且其中所述第一贴片的所述至少一个狭缝状部分至少部分地跨过所述第二贴片的所述至少一个条状部分的上方或部分地交叉，从而形成耦合区域。 至少一个槽状部分可以由第一贴片中的至少一个凹口形成，并且至少一个条状部分可以由第二贴片中的至少一个孔形成。

    Tunable microwave devices with auto-adjusting matching circuit
    7.
    发明授权
    Tunable microwave devices with auto-adjusting matching circuit 有权

    公开(公告)号：US06590468B2

    公开(公告)日：2003-07-08

    申请号：US09909187

    申请日：2001-07-19

    Applicant: Cornelis Frederik du Toit ,  Deirdre A. Ryan

    Inventor： Cornelis Frederik du Toit ,  Deirdre A. Ryan

    IPC: H03H1130

    CPC classification number: H01P5/028 ,  H01P5/04 ,  H01Q1/242 ,  H03F1/56 ,  H03F3/60 ,  H03H7/40 ,  H04B1/0458

    Abstract: An impedance matching circuit includes a conductor line having an input port and an output port, a ground conductor, a tunable dielectric material positioned between a first section of the conductor line and the ground conductor, a non-tunable dielectric material positioned between a second section of the conductor line and the ground conductor, and means for applying a DC voltage between the conductor line and the ground conductor. The impedance matching circuit may alternatively include a first planar ground conductor, a second planar ground conductor, a strip conductor having an input port and an output port, and positioned between the first and second planar ground conductors to define first and second gaps, the first gap being positioned between the strip conductor and the first planar ground conductor and the second gap being positioned between the strip conductor and the second planar ground conductor. A non-tunable dielectric material supports the first and second planar ground conductors and the strip conductor in the same plane. A connection is provided for applying a DC voltage between the strip conductor and the first and second planar ground conductors. A plurality of tunable dielectric layer sections are positioned between the strip conductor and the first and second planar ground conductors so as to bridge the gaps between the said first and second planar ground conductors and the strip conductor at a plurality of locations, leaving non-bridged sections in between, defining a plurality of alternating bridged and non-bridged co-planar waveguide sections.

    Dual polarised patch-radiating element
    8.
    发明授权
    Dual polarised patch-radiating element 失效
    双极化贴片辐射元件

    公开(公告)号：US06236367B1

    公开(公告)日：2001-05-22

    申请号：US09160914

    申请日：1998-09-25

    Applicant: Cornelis Frederik Du Toit ,  Mathias Martin Ernest Ehlen ,  Richard John Hutchinson ,  John Heywood Thomson

    Inventor： Cornelis Frederik Du Toit ,  Mathias Martin Ernest Ehlen ,  Richard John Hutchinson ,  John Heywood Thomson

    IPC: H01Q138

    CPC classification number: H01Q9/0414 ,  H01Q9/0407 ,  H01Q9/0428 ,  H01Q9/0435 ,  H01Q9/0471

    Abstract: A radiating element for dual polarised operation in a linear antenna array is disclosed. The radiating element is a dual polarised radiating patch element consisting of a ground plane, a lower patch, an upper patch and parasitic elements. The lower patch and upper patch are stacked above the ground plane in a spaced apart relationship. The parasitic elements lie in the same plane as the lateral edges of the lower patch. Supports are used to hold the patches and the parasitic elements in a spaced apart relationship. The parasitic elements are fed from a central area of the lower patch by microstrips. The ground plane has apertures which are of a dumbbell shape to achieve the same effective length as long apertures. Orthogonally disposed strip type driven elements span across the central portions of the apertures and the length of these strips is selected to achieve the desired matchings. The feed to the driven elements will typically form part of a feed network etched onto a PCB mounted adjacent to the ground plane with conducting elements facing away from the ground plane. One requirement of this device is that the return loss at each port must satisfy a certain minimum level over a given frequency band. This is satisfied by employing an aperture coupled stacked patched configuration. Another requirement is that isolation between the two ports has to satisfy a certain minimum allowed level which is achieved by obtaining almost perfuect symmetry in one plane. In order to narrow the beam width for the vertically polarised radiation parasitic elements are provided which are feed from a region located near the middle of the lower patch via microstrips.

    Abstract translation: 公开了一种用于线性天线阵列中的双极化操作的辐射元件。 辐射元件是由接地平面，下部贴片，上部贴片和寄生元件组成的双极化辐射贴片元件。 下贴片和上贴片以间隔开的关系堆叠在地平面上方。 寄生元件位于与下贴片的侧边缘相同的平面上。 支撑件用于将贴片和寄生元件保持间隔开的关系。 寄生元件通过微带从下部贴片的中心区域供给。 接地平面具有哑铃形状的孔，以实现与长孔相同的有效长度。 正交设置的带式驱动元件跨过孔的中心部分，并且选择这些条的长度以实现期望的匹配。 被驱动元件的馈送通常将形成蚀刻到邻近接地平面安装的PCB上的馈电网络的一部分，其中导电元件背离接地平面。 该设备的一个要求是每个端口的回波损耗必须在给定频带上满足一定的最小电平。 这通过采用孔耦合堆叠修补配置来满足。 另一个要求是两个端口之间的隔离必须满足一定的最小允许电平，这通过在一个平面中获得几乎完美的对称性来实现。 为了减小垂直极化辐射的光束宽度，提供了从经由微带的下贴片中间附近的区域进给的寄生元件。

    Loaded line phase shifter having regions of higher and lower impedance
    9.
    发明授权
    Loaded line phase shifter having regions of higher and lower impedance 有权
    负载线移相器具有较高和较低阻抗的区域

    公开(公告)号：US07123115B2

    公开(公告)日：2006-10-17

    申请号：US10914424

    申请日：2004-08-09

    Applicant: Cornelis Frederik du Toit

    Inventor： Cornelis Frederik du Toit

    IPC: H01P1/18

    CPC classification number: H01P1/181

    Abstract: An embodiment of the present invention provides a phase shifter, comprising: a base dielectric layer; a tunable dielectric layer overlaying at least a portion of the base dielectric layer; and at least two conductors overlaying at least a portion of the tunable dielectric layer, the at least two conductors positioned so as to form a slot-line topology. In an embodiment of the present invention the slot-line may be between 2 μm and 5 μm wide and the tunable dielectric layer may be between 0.3 μm to 1.5 μm thick. Further, the slot-line topology may be a uniform slot-line topology throughout the length of the at least two conductors and the slot-line topology may have an edge ratio defined by r=Llow/(Llow+Lhigh). The edge ratio may be optimized for minimizing metal loss and minimizing dielectric loss for a given phase shifter length. In an embodiment of the present invention the value of r may be between 0.1 and 0.2.

    Abstract translation: 本发明的实施例提供了一种移相器，包括：基极电介质层; 覆盖所述基极介质层的至少一部分的可调电介质层; 以及至少两个导体，其覆盖所述可调电介质层的至少一部分，所述至少两个导体定位成形成槽线拓扑。 在本发明的一个实施方案中，槽线可以在2μm和5μm宽之间，并且可调电介质层可以在0.3μm至1.5μm厚之间。 此外，时隙线拓扑可以是在至少两个导体的整个长度上的均匀的时隙线拓扑，并且时隙线拓扑结构可以具有由r = L 低低+ L高高）。 可以优化边缘比率以最小化金属损耗并且使给定移相器长度的介电损耗最小化。 在本发明的一个实施方案中，r的值可以在0.1和0.2之间。

    Stacked patch antenna and method of construction therefore
    10.
    发明申请
    Stacked patch antenna and method of construction therefore 有权
    堆叠贴片天线及其结构方法

    公开(公告)号：US20050110686A1

    公开(公告)日：2005-05-26

    申请号：US10914544

    申请日：2004-08-09

    Applicant: Cornelis Frederik du Toit

    Inventor： Cornelis Frederik du Toit

    IPC: H01Q20060101 ,  H01Q1/38

    CPC classification number: H01Q9/0414 ,  H01Q19/005

    Abstract: A stacked antenna, comprising an upper patch including at least one strip-like part formed from a hole in the upper patch and at least one slot-like part formed from at least one notch in the upper patch; a lower patch including at least one strip-like part formed from a hole in the lower patch and at least one slot-like part formed from at least one notch in the lower patch; and wherein the at least one strip-like part of the upper patch is at least partially crossing over the at least one notch in the lower patch In and embodiment of the present invention, the a portion of the at least one strip-like part of the lower patch is at least partially crossing under a hole in the upper patch and may further comprise at least one microstrip feed capable of connecting a ground plane with the lower patch.

    Abstract translation: 一种叠层天线，包括上片，其包括由上片中的孔形成的至少一个条状部分和由上贴片中的至少一个凹口形成的至少一个狭缝状部分; 下部贴片，包括由下部贴片中的孔形成的至少一个条状部分和由下部贴片中的至少一个凹口形成的至少一个狭缝状部分; 并且其中所述上贴片的所述至少一个条状部分至少部分地与所述下贴片中的所述至少一个切口部分交叉。在本发明的实施例中，所述至少一个条形部分的一部分 下部贴片在上部贴片的孔下方至少部分交叉，并且还可以包括至少一个能够将接地平面与下部贴片连接的微带馈线。

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